http://www.bbc.co.uk/skillswise/numbers/wholenumbers/addsubtract/mental/flash7.shtml
http://www.bbc.co.uk/skillswise/numbers/wholenumbers/addsubtract/mental/flash9.shtml
http://www.bbc.co.uk/skillswise/numbers/wholenumbers/addsubtract/mental/flash3
i have had a go at the first one and its good
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naomi said
i have had a go at the first one and its good
